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81. Magnetically-activated fan with sound
Place a magnet next to the reed switch 13. The fan will start to spin and you'll hear the star wars
sound effects.
82. Light-activated fan with sound
Replace the reed switch
13
with the phototransistor 132. You can now use light to operate the
„singing" fan. Light causes the fan to rotate, producing sound. If you shield the phototransistor,
the fan stops rotating and falls silent.
83. Touch-activated fan with sound
Remove the phototransistor 132. When you touch the touch 12, the fan starts to rotate and
you hear the star wars sound effects.
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84. Light-activated loud police sirens
Turn on the switch
15
and shield the phototransistor
132
from light. When the sound stops,
you can use light to activate the police sirens.
85. Light-activated loud machine-gun fire
Connect terminals C-D, as well as E-F. Now you can use light to activate the machinegun fire.
86. Light-activated loud fire truck sirens
Connect terminals A-B, then C-D. Now you can use light to activate the fire truck sirens.
87. Light-activated loud ambulance sirens
Connect terminals C-D, then B-G. Now you can use light to activate the ambulance sirens.
In this diagram, different siren sounds, re-
corded in the memory of module 22, will be
mixed with the Happy birthday song, recorded
in module 21.
88. Rain-activated police sirens
Replace the phototransistor
132
with the touch plate 12. If raindrops fall on the touch place,
you'll hear the sound of police sirens from the loudspeaker. You can simulate the rain yourself.
89. Rain-activated machine-gun fire
Connect terminals C-D, and then E-F. Now you can activate the machine-gun fire with rain, which
you can simulate yourself.
90. Rain-activated fire truck sirens
Connect terminals A-B, then C-D. Now you can use rain to activate the fire truck sirens.
91. Rain-activated ambulance sirens
Connect terminals C-D, then B-G. Now you can use rain to activate the ambulance sirens.
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